Introduction
As electricity prices continue to rise and awareness about sustainable energy grows, more Indian households are shifting to solar power. A 3kW solar panel system is one of the most popular choices for small to medium-sized homes. In this post, we break down the full cost, types of systems, installation factors, subsidies, and more.
What is a 3kW Solar System? 3kW Solar Panel
A 3kW solar system typically:
- Generates ~12-15 units of electricity per day
- Is suitable for a 2-4 BHK home using 8-10 electrical appliances
- Covers 300–400 sq ft of rooftop space
- Can reduce your electricity bill by up to ₹3,000–₹5,000 per month
Cost of a 3kW Solar Panel System in 2025 (India)
| System Type | Cost per Watt | Total Cost (Approx.) | Inverter Type |
| On-grid System | ₹45 – ₹55 | ₹1,35,000 – ₹1,65,000 | Grid-tied |
| Off-grid System | ₹60 – ₹70 | ₹1,80,000 – ₹2,10,000 | With battery backup |
| Hybrid System | ₹70 – ₹85 | ₹2,10,000 – ₹2,55,000 | Grid + battery |
Note: Prices vary by brand, quality, installation complexity, and location.
What’s Included in This Price? 3kW Solar Panel
A typical 3kW solar package includes:
- Solar panels (monocrystalline/polycrystalline)
- Inverter (string or micro)
- Mounting structure
- Cables, wiring, and junction boxes
- Net metering setup (for on-grid)
- Installation & commissioning
- Battery (for hybrid/off-grid only)
Government Subsidy in 2025 3kW Solar Panel
The Indian government continues to promote rooftop solar through the PM Surya Ghar: Muft Bijli Yojana.
Latest Subsidy Structure (2025)
- ₹18,000 per kW for the first 3 kW
- So, for a 3kW system: ₹18,000 × 3 = ₹54,000 subsidy
- Subsidy is applicable only for on-grid systems installed via MNRE-registered vendors
Final cost after subsidy (on-grid): ₹1,65,000 – ₹54,000 = ₹1,11,000 approx.
Maintenance & Savings
- Maintenance: Minimal (occasional cleaning + inverter check)
- Annual Savings: ₹36,000 – ₹60,000
- Payback Period: 4–6 years
- Warranty: Panels (25 years), Inverter (5–10 years)
Installation Timeline
- Site inspection: 1–2 days
- Paperwork (discom approval): 7–15 days
- Installation: 2–3 days
- Net metering: 1–2 weeks post-installation
Tips to Choose the Right Vendor
- Choose MNRE-approved installer
- Check Google reviews and past projects
- Confirm post-installation service
- Ask for detailed quote with brand specs
- Ensure net metering support
Should You Go Solar in 2025?
If your monthly bill is above ₹2,000 and you have an unshaded rooftop, a 3kW solar system is a smart investment in 2025. With rising power costs, long-term savings, and attractive government subsidies, now is the best time to switch to solar.
Conclusion
A 3kW solar panel system in India in 2025 can cost anywhere between ₹1.1 to ₹2.5 lakhs depending on the type and features. With subsidies and modern tech, solar energy is more accessible and profitable than ever. Want help choosing the right system? Contact our solar experts today!
